AGL Resources Inc.

http://www.aglr.com

Baltimore Gas & Electric Co.

http://www.bge.com

Brooklyn Union

http://www.bug.com

Colonial Gas

http://www.bge.com

Consolidated Edison Co. of New York

http://www.coned.com

MidAmerican Energy Company

http://www.midamerican.com

National Fuel Gas Distribution Company

http://www.nationalfuelgas.com/marketers

Nicor

http://www.nicorinc.com

NUI Corporation

http://www.nui.com

Oklahoma Natural Gas Company

http://www.ong.com

Piedmont Natural Gas Company

http://www.piedmontng.com

Southern Connecticut Gas Company

http://www.soconngas.com

Wisconsin Gas Company

http://www.wisconsingas.com